That was fun! I like Minute Physics. I like how he related the full equation to the right triangle. What is p in that equation? I'm tempted to think of it as rho, but it's a 'p', not a rho, even though a rho looks a lot like a 'p'.

"The amazing thing is that every atom in your body came from a star that exploded. ... So, forget Jesus. The stars died so that you could be here today." -- Lawrence Krauss

I'm not a super-genius, but it seems that a similar example would show us why the third law of thermodynamics doesn't allow for anything to exchange an equal amount of energy. Anyone more knowledgeable than me care to refute or confirm that?